If the chord joining points P and Q on the ellipse subtends a right angle at the vertex A a 0 t...........

If the chord joining points P( $\alpha$ ) and Q( $\beta$ ) on the ellipse $\frac{x^{2}}{a^{2}}+\frac{y^{2}}{b^{2}}=1$ subtends a right angle at the vertex A (a,0), then tan ( $\alpha$ /2) tan ( $\beta$ /2)=

$\frac{a^{2}}{b^{2}}$

$-\frac{a^{2}}{b^{2}}$

$\frac{b^{2}}{a^{2}}$

$-\frac{b^{2}}{a^{2}}$

Explanation:

$\frac{a^{2}}{b^{2}}$

By: Swaminath Yadav

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If the chord joining points P and Q on the ellipse subtends a right angle at the vertex A a 0 t...........

Explanation:

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